Download the Intel® HD Graphics QE/CI package if your laptop is using the LVDS connector. This package has the necessary kexts to enable Quartz Extreme with Core Image (QE/CI). This enables full hardware/graphics acceleration.

Important!
Don't format or delete the EFI partition.
From the Mac USB we need delete AppleIntelHDGraphicsFB.kext.

Now we go in to the installation of El Capitan, with disk utility format the partition "Mac" in HFS+ mac journaled, then install Mac OS X.
While starting El Capitan from your hard drive, we must block AppleIntelHDGraphicsFB.kext and AppleIntelHDGraphics.kext. (& add cpus=1 or patch with clover)
When El Capitan is started:
Patch AICPM with Clover Configurator
Install Clover like this (of course without installation El Capitan) "Legacy mode"
Replace the config.plist in EFI partition and add SMBIOS with clover configurator - macbook pro 6.1
Put the DSDT
Put HFSPlus.efi, NTFS.efi in drivers64 folder
Insert and replace all kext
PS:During the first system start we must go in the system preferences, keyboard, shortcuts and change the key combination of brightness (f2- f3+).

I'm trying to install OSX El Capitan on my laptop all the time.I have a laptop with a Intel CORE i5 430M Arrandale CPU and first generation Intel HD Graphics.The problem is the graphics card.I have deleted the kext for the graphics card to install El Capitan.After installing it boots also without error messages, but then comes a graphic error. The graphics error was already before I had deleted the Kext before installing.The graphics error should not come, however, if I had deleted the kext?

I can install OSX successfully, but when booting comes a graphic error.

I have also searched the Internet for solutions. The solutions I had found only work after a successful boot.